Soft-Tissue Distraction Prior to Single Bone Forearm Surgery in Ulnar Longitudinal Deficiency: A Report of Two Cases

Florian Schachinger1, Werner Girsch1, Sebastian Farr1

  • 1* Department of Pediatric Orthopedics and Adult Foot and Ankle Surgery, Orthopedic Hospital Speising, Vienna, Austria.

Insights

Ulnar longitudinal deficiency (ULD) treatment is challenging. A modified single bone forearm surgery with Ilizarov external fixator distraction achieved stability and improved function in two pediatric patients with ULD Bayne Type II.

Area of Science:

  • Orthopedic Surgery
  • Congenital Hand Deformities
  • Pediatric Orthopedics

Background:

  • Ulnar longitudinal deficiency (ULD) is a rare congenital upper limb anomaly.
  • Existing treatments lack a gold standard, posing challenges for hand function.
  • Bayne Type II ULD involves partial ulna aplasia.

Observation:

  • Two pediatric patients (3 and 16 years old) with ULD Bayne Type II were treated.
  • A modified single bone forearm surgery was employed.
  • An Ilizarov external fixator was used for soft tissue distraction and radius distalization prior to single bone forearm creation.

Findings:

  • The modified surgical technique successfully created a single bone forearm.
  • The intervention achieved forearm stability and improved hand function.
  • Additional limb length gain and improved cosmesis were observed due to the Ilizarov fixator application.

Implications:

  • This modified approach offers a potential new treatment strategy for ULD.
  • The technique may enhance functional outcomes and aesthetic results in ULD patients.
  • Further research is warranted to validate this novel surgical method for ULD treatment.

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